Storage rack



FIG. 1 is a front view of a storage rack showing my new design;

FIG. 2 is a right view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a perspective view thereof. 

The ornamental design for a storage rack, as shown and described. The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design. 